Improvement in steam-radiators



' G. Wu BLAKE.

ST EAMBADIATOR. U

m. 189,017. lalten ted April 3, 1877.

U ITED ST TES PA E T; orrma GEORGE w. BLAKE, OF NEW YORK, N. Y.

IMPROVEMENT m SBI'VEAM-RADIIATOIRS,

Specification forming part of Letters Patent No. 189,017, dated April 3,1877;, application filed September 7, 1876.

To all whom it may concern:

Be it known that I, GEORGE W. BLAKE, of the city, county, and State ofNew York, have invented certain new and useful Improvements inRadiators; and I do hereby declare that the following is a full, clear,and exact description of the same, reference being had to theaccompanying drawing, which forms part of this specification.

This invention relates to that description of steam-radiators which arecomposed for the most part of outer steam-heating pipes or tubes andinner air circulating and heating pipes arranged within the steam-tubes.

The invention consists in a novel construction of said combined tubes orpipes, in which the air circulating and heating pipes are welded, attheir upper or outer ends, to the steam-heating pipes or tubes, by whichthey are inclosed, so as to form an integral or component part of thesteam-tubes, whereby increased strength and solidity is obtained, thefitting together of the radiator is facilitated, and leakage at thejunction of the steam pipes or tubes with the air-circulating andheating pipes or tubes is avoided.

The invention also consists in a combination, with the steam-base of theradiator, of the outer steam-heating pipes or tubes and inner aircirculating and heating pipes or tubes, attachedat their upper or outerends to the steam pipes or tubes, constructed to jointly screw at theirlower or inner ends into said base-that is to say, the outersteamheating pipes or tubes constructed to screw into the upper portionof the base, and the inner air circulating and heating pipes constructedto screw into or through the lower portion of the base, whereby both theouter and inner tubes are fitted to their places and secured, alsodetached, when required, by simply manipulating or turning the outertubes.

Figures 1 and 2 represent vertical longitudinal sections of twomodifications of steamradiators having my invention applied.

A A represent a series of outer steam pipes or tubes, closed and unitedat their upper ends by welding, with a corresponding series of inner aircirculating and heating pipes, B B, which thus form a component part ofthe outer tubes, and which extend down through the outer tubes and belowthem, and are open top and bottom to provide for the circulation of airthrough them.

The outer or steam-heating tubes A A are open only at their bottoms, andconnect at such parts with the upper portion of the steambase 0 of theradiator, while the inner or air circulating and heating pipes passthrough said base, so as to admit air through them from below thelatter.

To facilitate the joint attachment of these outer and. inner tubes A Bwith the base 0, the tubes A are constructed with screwthreads a attheir lower ends, arranged to fit corresponding threads in the upperportion of the base 0, and the lower ends of the tubes B with threadsI), of alike pitch and direction as the threads a, and arranged to fitfemale threads in the lower portion of the base, through which they formcommunication with the air outside of the radiator.

By this construction of the attached inner and outer tubes and mode offitting them to their places, it is only necessary to manipulate or turnthe outer tubes to secure or detach, as required, both the inner andouter tubes.

By the welding of the inner and outer tubes together at their upperends, all leakage at the junction of said parts is avoided, andincreased stiffness and solidity secured for the same also, labor iseconomized in the fitting of the radiator. I

D D are return steam-circulating pipes within the tubes A A. In Fig. 1these pipes, which have communication through them top and bottom, screwat their lower end into a horizontal partition, 0, in the base, toprovide for the escape of water of condensation into the lower chamberof said divided base, the steam being admitted to the upper chamber ofthe latter. In Fig. 2 the base 0 is not horizontally divided, but thereturn steam-pipes D are each made to connect with a water-pit in thelatter, to prevent steam, as it is admitted to the base, blowing throughthem and said pipes are welded at their upper ends to form a componentpart of the outer tubes, and with one or more lateral perforations inthem at their upper ends. Such constru tion and siphonic provision atthe lower ends of said pipes D forms no part, however, of thisinvention, but is made the subject of a separate application for LettersPatent.

I claim- 1. The outer steam-heating pipes A and inner air circulatingand heating pipes B of the radiator, united at their upper or outer endsby welding, whereby said inner and outer pipes are integral portions ofeach other,sub- Ftantially as and for the purposes herein set orth.

2. The outer and inner ,pipes- A and B,

united with each other at their upper or outer ends, and constructedwith screw-threads a and b, of like pitch and. direction, at theiropposite ends, in combination with the radiatorbase O,having tappedholes, into which the threaded portions of both pipes A and B aresimultaneously screwed, essentially as described.

t GEO. W. BLAKE.

Witnesses:

A. J. DE LACY, BENJAMIN W, HOFFMAN.

